Will be waiting until Anko-chan gets this story into her safe. Hasn't seen much luck with aquatic yukkuri stories. Most of them are just abuse stories where the Marisa are thrown forced to go on water just to fall down because they just don't have the ability for hat riding.
... oh well, can't help it. It's another of those Maricha Village type of story about abyuser pretending to "help" improve the Maricha. This one is about a "yacht school" to train Marisa into Aquatic Marisa while improving the personality of those spoiled children.
Got bored midway. Too blatantly hypocrite. The usual no-nonsense no-pretense abyuse works is better.